anthony



5 Sheets-Sheet 2.

B. W. ANTHONY. Sink-Trap;

-.No. 225,503. 'Patent'ed Mar. 16,1880.

WITNESSES INVENTU 9mm 9 3 NFETERS, PIWTO-UTHOGBAPHZQ. WASHINGTON. D. C.

5 Sheets-Sweet 3.

4 V E. W.1A'NTHONY. L -Sink=Trap.

No. 225,503. Pa tented ar. 16,1880.

Fi -4; lFigj- NJETERS, PHOTO-LITHOGRAPHER. WAQHINGTON. 010.

5 Sheets-Sheet 4.

E. W. ANTHONY. Sink-Trap.

No. 225,503. Patnred Mar. 16,1880.

WITNESSES 5 Sheets-Sheet 5.

E.W.ANTHONY. Sink-Trap.-

No. 225,503. Patented Mar. 16, 1880..

2921-6555521 I INVENTEIR ww i f V z fiz/j d,

. tion of this coupling.

UNITED STATES PATENT Orr cn.

EDGAR W. ANTHONY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO SMITH & ANTHONY STOVE COMPANY.

SINK-TRAP.

SPECIFICATION forming part of Letters Patent No. 225,503, dated March 16, 1 880,

' Application filed December 15, 1879.

To all whom it may concern Be it known that 1, EDGAR W. ANTHONY, of Boston, in the county of Suffolk and State of Massachusetts, have invented an Improvement in Sink-Traps, of which the following is a specification.

This improvement relates to that class of stench traps that are usually employed in kitchen-sinks; and it consists in contrivances for automatically cleaning the samefrom grease and other deposits, for preventing the accumulation of grease in the pipes, and for coupling theapparatus to the draining-pipe, so that it may be readily uncoupled in case repair is desirable without breaking a soldered joint.

In the drawings, Figure 1 is a top view of the main bowl of this trap with the pipe-dome and strainer removed. Fig. 2 is a top view of the bowl with the cover raised and the pipedome in place. Fig. 3 is a vertical section. Fig. 4. is a top view of the lower section of the coupling uniting the drain-pipe to the bowl of the trap. Fig. 5 is a plan of the upper see- Fig. 6 is a top view of the apparatus with the strainer in position.

Fig. 7 is a bottom plan of the strainer and its attachment. Fig.8 is a bottom View of the body of the trap. Fig. 9 is a top View of the coupling uniting the body of the bowl to the pipe. Fig. 10 is a plan of the bottom of the dome inverted.

Like letters indicate like parts in all the figures.

Ais the bowl or body of the trap. It is shaped on its exterior so as to have in its center an upwardly-presenting boss, B, surrounded by a deep annular groove, 0. Near the upper exterior edge of this bowl is a ledge, d, and from this ledge the bowl is continued upward and terminates in a horizontal flange, 0. This flange eis intended to lap upon the boards or lining of the sink in the usual way of flanges to sink-traps or cess-pools, or it may represent thebottom of a metal sink with which the bowl is cast.

A dome, F, provided upon its under side witha projection or shelf, f, fits over the boss B and forms a cover to the drain-pipe G. This dome F is fastened firmly upon the edge of the said drain-pipe by means of two little downwardlyprojecting starts on each side of the screw-hole j", which clasp the neck I) of the boss B, and a screw driven in through the shelf f into the screw-boss b. There is a free annular space beneath its edge from the annular groove O to the drain-pipeG.

' It will be noticed that the edge of the dome laps over the edge of the boss B, and thus, when water is standing in the annular groove 0, there is a water-seal between the pipe G and the sink. The dome is finished upon its top by a central pin, f

The strainerH has a central hole, which fits around the pin f and is provided upon its lower side with a ledge, h, which rests upon the top of the dome around the pin f and this ledge furnishes a central bearing for the strainer.

Upon the ledge d there are provided, at three different points around the circumference, slight elevations d, which furnish friction-bearings for the edges of the strainer, and thus secure the proper position of the strainer, and prevent it from being raised above the central hearing by the accuminulation of greasein the ledge d, and the outer edge of the strainer does not contact with the wall of the bowl at any other point.

The lower part of the trap is extended downward, forming the coupling cone A. coupling-cone is provided upon its exterior with two ears on opposite sides, a, and around this cone is an annular groove, a (seen in Figs. 3 and 8,) for the reception of packing or putty.

On the lower side of the strainer H is a fixed bracket, h, which projects to a distance from the center of the strainer somewhat less than the radius of the strainer, in order that there may be a good clearance between it and the interior of the walls ,of the body of the trap. To this bracket is pivoted the hook 72 which hooks under the inside of the dome; and the strainer is further provided with a pin, 7L3, by which it can be readily revolved,

This

the hook h being in contact with the Walls of the dome, serving as a means to scrape the inside of the dome during its revolution, and thus prevent the passage under it from being clogged with grease. The bottom and edges of this hook k also come in contact with the bottom of the annular groove 0, and serve to scrape that and keep it clean.

The method of coupling this sink-trap to the pipe is as follows: The lower coupling, K, is made cup-shaped on its exterior and is provided with two ears, 7c. The hole 70 through the bottom of this lower coupling, K, is of proper size for the passage of the drain-pipe, and the pipe is expanded or flared out to proximately fit the interior of this lower coupling, K. The upper coupling, L, is also provided with ears I, and its interior is shaped to receive and lock the nozzle A and its cars a by having two opposite slots, Z, for the passage of the ears to upon the nozzle A of the body of the trap, and a pair of spiral cams, 1 also placed upon the inside of this upper coupling, L, under which cams the ears to of the body of the trap are locked by revolving said body. It will be noticed in Fig. 3 that at this part of the joint there are some vacant spaces, and I propose to fill them with putty or other cement or packing in coupling up the apparatus.

The drain-pipe A of the body of the trap is long enough to extend down into the pipe G for some considerable distance, so as to furnish a proper seal between the two, and it is locked into place by revolving the trap under the spiral cams l These two couplings K and L are firmly secured together through the ears 7c and l by screw-bolts m. This method of coupling np, it will be seen, is a very cheap and very efficient one.

I claim as my invention and desire to secure by Letters Patent 1. In a sink-trap, the combination, with the bowl A of the trap, of the strainer H, adapted to be revolved, and carrying, in combination therewith, the scraper h adapted to scrape and clean the interior of the cavity of the water-seal of said trap, substantially as described.

2. In a sink-trap, the combination of the strainer H with the annular supporting-ledge h, the pin f projecting upwardly from the dome, and with the ledge d, projecting inwardly from the body of the trap and having a vertical clearance through nearly the whole of its circumference between it and the strainer H,

substantially as and for the purpose described.

3. In a sink-trap, the combination .of the dome F, fastened to one side of the annular boss B, the annular boss B, and the annular water-chamber O, substantially as and for the purposes described.

4.. The combination of the dome F, with its upwardly-presenting pin f and the strainer H, adapted to be revolved horizontally around said pin, and provided with the scraper 7L2, substantially as and for the purposes described.

5. The combination of the coupling comprising the parts L K, adapted to secure the pipe to the bowl, as described, with the bowl A and its downwardly-projecting nozzle A, substantially as and for the purposes set forth.

6. In combination with the coupling L, the nozzle A, and the bowl A, the packinggroove a", cast in the under surface of the bowl, and surrounding the nozzle A, substantially as and for the purposes described.

7. The combination of the bowl A and its nozzle A, provided with the ears to and spiral cams Z cast therewith, with the coupling L K and pipe Gr, substantially as described.

8. The combination of the coupling Landthe coupling K, shaped as described, and adapted to be used together, as set forth, with the pipe G and the cars Z and bolts m, substantially as described.

9. The combination of the trap A and its nozzle A, with the pipe G, by means of the interiorly-conformed couplings K L, substantially as and for the purpose described.

10. The combination of the dome F withthe annular boss B, connected by screw-boss Z), ledge f, and screw f, substantially as and for the purpose described.

11. In a sink-trap, the combination, with the bowl A of the trap, of the strainer H, adapted to be revolved and fastened in the bowl by the scraper 7L substantially as and for the purposes described.

EDGAR WV. ANTHONY.

Witnesses:

F. F. RAYMOND, 2d, M. W. SAWYER. 

